Lucky Star Figma Face Chart
Something really interesting I found while browsing Gelbooru.
Not sure if everyone knows this, but GSC made the exchangable faces of all the Lucky Star characters to be interchangeable between each other. Some great soul actually made a chart to show you what each face piece would look like on each character.
While the title picture only features the original 4 Winter Uniform Versions, the following chart includes the Summer Uniform Versions as well: